$49.99 (as of September 10, 2018, 7:13 am)
Wired network is strongly recommended
Compatible controllers with Steam Link: Steam Controller, Xbox One USB wired, Xbox 360 USB wired, Xbox 360 wireless, PS4, PS3 wired and Wii-U Pro. Many third-party Xbox controllers are also supported.
Steam Link is designed to take advantage of the horsepower you already have in your home, streaming from your current gaming computer by mirroring its experience to your TV.